This is a little tool I put together to remove WAT, with help from various others, (WindowsActivation Technologies) completely from the OS, whilst still retaining genuine status and receiving all updates (optional aswell). You can also pass the genuine check in things like Windows Security Essentials....

RemoveWAT v.2.2.5 is a Windows 7 crack that completely removes WindowsActivation Technologies from the system so that users can validate the illegal pirated copies of Windows 7 as genuine status (some reported as “Tampered Binary” in MGADiag due to patching), forever and permanently....